Method for purifying gases



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Ill'o Drawing. original application filed February d, 19%, Serial No. cases, and in Germany February ll, 19%. hivided and this application filed hprillfi, that. serial lll'o. reason.

This invention relates to a method for purifying gases. The object thereof is to remove foreign matter fro'ni gases even the smallest residue of them which act in certain processes, for instance in hydrating processes and in similar methods as poisonous matter, if present in the smallest possible quantities. Such foreign matter or poisons are for .instance carbon monoxide, carhonic th acid, oxygen, sulfur compounds, Water and the like.

The present method consists in bringing into intimate contact the gases to he purified With alkali metals or .vvith allraline ft earth metals or the amides thereof in a finely divided state, so that the-gases are therehy substantially completely freed from the residue of foreign matter acting as poison. "lhe intimate contact may he obtained by passing the gases through the purifying agent or hy Washing thegases with the purifying agent. lnstead of the aali metals or the aaline earth metals or the amide-com ounds thereof, mixtures at of the metals or o the 1 u amongst each other or of both groups may likewise he emlit is preferable to employ the played.

' r g cans in dissolved state, hy disfllgg l 1 a: l solving instce the metals may he dissolved in their ado-compounds or a mint of the are the in a Water free solvent. l or' cited lrind respectively. By this treatment the gases are purified to a degree previously unattainable. Gases which today are considered as practically pure may he rendered 35 considerably purer, so that by the coon analytic method no residue orno' presence of foreign matter or disturhing suhstance' may he found hy test.

its stated, the alkali formin metals, thatto is the alkali and alkalineeart h metals can be used alone or they can be dissolved in Water free solvents such as the amides of the alkali forming metals.

This application is a division of my 00- t5 pending application Serial Number 86,635 filed Fchruary 6, 1926.

l claim:

l. The process of purifying gases which comprises intimately contacting the as to so he purified With alkali forming meta s dissolved in amides of allrali forming metals.

2. The process of purifying gases which comprises intimatcl contacting the gas to he pnrihed with al ali metals dissolved in 55 amides of aali forming metals.

3. e process ofplurifying gases which comprises intimatel contacting the gas to he pned with metals dissolved in 

